Oil burning apparatus



PY L 1941- w. J; SMITH x-rrAL 2,236,924

OIL BURNING APPARATUS F11 d Sept- 5, 1959 5 Sheets-sheet 1 April 1, 1941. w. J. sMiTH ETAL OIL BURNING APPARATUS v Filed Sept. 25, 1939 3 Sheets-Sheet 2 v mwwu 01M mm am mlm) wm, mw NN. @MJ Il m1@ Nmv f /77 a nu? April 1, 1941. W J SMITH -FAL 2,236,924

OIL BURNING APPARATUS Filed Sept. 25, 1939 5 Sheets-Sheet 5 'll/ll/ /M W M l Patented Apr: l, 1941 UNITED sTATEsrATENT OFFICE OIL BURNING APPRATUS S.

wiuiam J. smith and William w. siaght, Rocky River, Ohio, assignors to Cleveland Steel Products Corp., Cleveland, Ohio, a corporation of Ohio Application September 25, 1939, Serial No. 296,508

(ci. '15s-4) 3 Claims.

This i-nvention relates to oil burning apparatus,

ymore particularly to oil burning apparatus of the wall-name type.

In oil burning apparatus of the wall-flame type, oil and air are discharged horizontally from a rotatable distributing head above a hearth member into contact with a combustion promoting structure located near the furnace walls, which includes an oil vaporlzingjwall. .I-t is customary to also employe number voi? vapor or dame directing members associated with the combustion promoting structure to assist in the placement of the dame of combustion atthe desired location.

One of the objects of the present invention,

A further object is to provide an improvedv means for associating the air and oil/distribut- -ing means of a. wall alme burner with the hearth structure thereof.

With the above and other objects in view, the present invention consists in certain features of construction and vcombinations of parts to be hereinafter described with reference `.to the a-ccompanying-dnawings and then claimed.

In the drawings which illustrate a suitable embodiment ofv the invention Figure l. -is a horizontal sect-ion `taken through a furnace structure looking downwardly upon oil burning apparatus of the present invention installed there- 1n; I A

Figure 2 is a, vertical section vtaken approximately on line 2-2 of Figure l;

Figure 3 is a vertical section taken on line 3-3 of Figure l showing the ignition means;

Figure 4 is a vertical section taken on line 4-4 of Figure 1 showing the alir inletlopening; and 'f Figure 5 is a perspective View of one of the va- V por and flame deecting members.

Referring to the accompanying drawings in which like numerals refer to like parts throughout the several views, we have showna boiler or hot walter heater comprising an. annular base Space.

. chamber. 2S.

plate I0 secured by welding or other suitable means to a' cylindrical supporting member ll below the upper edge thereof as shown in Figure 2.

Secured by welding to the plate I0 at its inner periphery is an inner cylindrical shell I2 and secured by welding to the plate I0 intermedi'- ate its peripheral edges is an outer cylindrical shell I3, `the shells I2 and I3 forming the walter closing shell I5.

fThel cylindrical supporting member Il is provided with an opening I6 through its wall and associated with tlh-is opening is a frame Il which carries a screen or similar grill' work i8 -to perm-it air to ow into the supportingv member ll. The frame Il is secured over the opening I6 by means of screws i9.

Heretofore, it has been the practice to provide a built-upheanth and combustion promoting structure for wall ii'ame burners comprising -a large number of pieces or parts o-f different kinds of material.

yIn |the structure of the present invention we have provided a single piece annular casting 2i) preferably containing -suiiicien-t chromium and 1 nickel 4to render it capable of withstanding high temperatures and of having long life without being affected by high temperatures. Th-e casting 29 includes a hat circular portion 2l lar,- ranged to dt within the inner shell l2 land having its peripheral edge offset to provi-de a flange 22 disposed to abut the under side of the 'base plate I9. The flange 22 is provided with radial bifurc-alted portions 2li arranged to receive stu-ds 23 extend-ing downwardly from the base plate 'l0 so that the casting can be clamped in position by vmeans of nut-s 25, as shown in Fig-ure 2.

Preferably the upper side of the ange 22 is formed with a circular groove 26 to'receive a packing 2l which is compressed when the flange 22 is in clamped posi-tion to prevent air/flow between the ange 22 and base plate i9.

The casting 29 divides the structure into a lower chamber 28 andan upper or combustion The casting 2t also includes an inner upwardly exten-ding annular flange 39 'which pnovides l an air collar, the yfunction of which will be presently described. Within this air collar the flat plate portion 2l is provided with a series of circulairly spaced air ports 3l which surround a. central aperture 32. YAssociated withjthe air ports 3l is a, flat air gate 33 having similarly arranged ports 31|,r The gate 33if` is rotatably supported The shell I3 is surrounded by suitable insulation material Id held in place by an enwith respect 'to :the ports 3| by means of a flanged sleeve 35 which extends upwardly through the aperture 32 and is provided with a nut 38 threaded on its upper end and seating on the upperside of the casting portion 2|. By rotating the air gelte 33 the amount of air flowing through theadrports3lcanbeadjusted. s n

Extending downwardly from the under side of the casting punition 2| are boss-like elements 31 to which -brackets 38 are secured by meansof screws 38.

The burner motor 48 is provided with slotted radial arms 4| through which cap screws 32 extend, which screws are threaded into rthe brackets 33. The brackets 38 also carry vertical screws 4-3 .provided adjusting nuts 48. The screws 43 abut the radial arms 4| for vertical adjustmenit of the motor 48. l

The shaft 45 of the motor is tubular and projects at each end beyond the motor. The upper end of the shaft 45 is threaded and extends within the sleeve 35 and to this end a head member 46|is threaded. Extending from the head member 48 are a plurality of radial oil tubes 81 that open at their inner ends into a recess or chamber 48 within the head member which chamber communicates with the bore of the shaft 85.

The upper end of the head member 86 carries,v

l the construction has been greatly simplified by forming the air collar and air ports as an integral part of the hearth casting 28.

The lower end of the shaft 65 carries a pump member 52 which is formed with threads 53 and surrounded by a cup-shaped casing 54 secured by cap screws 55 to the motor casing, the threads 53 having running engagement with the. inner wall of the casing 54 so that as oil feeds through the inlet passage 56 to the open end of the shaft the 'threading action thereof `will cause the oil to flow upwardly through the shaft 45 to the chamber 48 Where it is thrown outwardly through the radial tubes 41 in a horizontal direction toward the combustion promoting structure.

n 'Ihe combustion promoting structure comprises a vaporlzing element and an air deflecting element. The vaporlzing element comprises a continuous ring 58 formed as an integral part of the hearth portion 2| and extending upwardly therefrom to a plane above the oil discharge tubes 41 so that during the operation of the, burner the `oil* dischargedhorizontally by the tubes 41 will be intercepted by the vaporizing Y vring 58.

` v"lhezair ldefle'cting element likewise comprises a substantiallycontinuous ring 59 formed as an integral part of and extending upwardly from the hearth portion 2l to substantially the horizontal plane of the upper end of the air.Y collar I38 as shown in Figure 2.

Arranged outwardly of the vaporizing ring 58 are a number of upstanding 'deector supports These supports carry deflecting members 6|. y Although different types of def-lecting members may be employed, there are shown here, for

illustration, deectors comprising a flat imperforate plate 62 of heat resistant sheet metal having secured thereto by welding a number of finger strips 63 of sheet metal which extend at an angle to theat surface of the plate 62. Also secured to the plate 62 and extending in the' direction of the strips 63 is a sheet metal strip 64 having tab-like portions 65 atits outer end bent to form a hollow clip66 for disposition cn one of the supports 68 as shown in Figure 2. It is to be noted that in its supported position the plate 62 is supported on the support 68 at an angle above the vaporizing ring 58 to overhang the space between it and the deflecting ring 59, and that the finger strips 63 project downwardly and outwardly beyond the vaporizing ring 68.

The plates 62 may be of any desired length to provide spaces therebetween or if desired they may substantially abut each other to form a substantially continuous imperforate deflecting surface.

In order to minimize the transfer of heat from the combustion chamber 29 to the motor compartment suitable heat insulating material 61 may be provided on the hearth plate 2| between the air collar 30 and deflecting ring 59, betweenl the rings 58 and 59 `and between the ring 58 and supports 88. The top surface of the insulating material 61 is somewhat below. the upper edge of the deecting ring 59, as shown in Figure 2.

For ignition there is provided an electric igniter constituting an electrode 68 having its lower portion housed with an insulator 89 mounted within an insulator block 18. The block 18 is disposed within a recess 1| in the hearth portion 2| adjacent the vaporizlng ring 58 with the insulator 89 projecting downwardly through an opening 12, as shown in Figure 3.A The electrode 68 is doubled back upon itself and then bent outwardly so that its tip points toward and is spaced slightly from the inner wall of the vaporizing ring 58 as shown in Figures 1 and 3.

Supported upon the ring 58 is a short thin plate 13 of heat resistant material which is also an electrical conductor and is capable of rapid heating. 'I'his plate 13 and the ring 58 constitutes the other electrode of the igniter. The plate 13 is formed with integral hook-like portions 14 at its upper edge which support it upon the ring 58. Y

The defiecting ring is broken away adjacent the igniter to provide a short open space 15 for a purpose to be presently described.

With respect to the operation of the oil burning apparatus described, when there is a demand for heat, i. e. burner operation, the control apparatus (not shown) establishes a circuit Y through the motor 48. The hot spark passing 68 formed integrally with the hearth portion 2|. l;

between the electrode 68 and thin plate 13 causes an almost instantaneous heating of the plate. Upon`the establishment of the vcircuit through the motor 48, the motor operates and through and the spark producedby the igniter the oil at that region is'ignited. The burningof thev oil at this region causes further and more rapid heating of the ignition plate 13 whereby vaporization and combustion occur. 'I'his together with the burning of the oil at the ring 58causes the metal ring 58lto become heated relatively rapidly with the result that within a very short time all of the voil impinging against the ring 58 is being vaporized and mixed with the air. The deflectors 6I cause the rising mixture to flow outwardly over the ring 58 and combustion occurs adjacent the space between ring 58 and wall l2; the finger strips 63 serving to cause thorough mixing and great turbulence and also to tend to hold the resulting ame down adjacent this space.

Heretoiore it has been the practice to support the deiiecting members by spaced supports directly onthe vaporizing ring. In accordance with the present invention the deecting members 6I are supported on the supports S0 outwardly of the vaporizing ring 58 thus leaving the upper edge of the ring 58 free of obstructions of any kind so that the vaporized oil may freely l travel over the ring without interference from obstructions as was the case in the burners heretofore known.

The correct placement o the oil with respect to the vaporizing wall or ring 58 is easily obtained through the medium of the adjusting screws 43 which vwhen rotated will raise or lower the oil tubes I1. After the correct vertical position of the tubes l1 is obtained, the screws l2 are tightened to lock the motor 40 in position.

Various changes and modifications may be made in the structure shown and described without departing from the spirit of the present invention, as dened by the appended claims.

What we claim is: 1. In an oil burning apparatus of the wall name type having a combustion chamber provided with an upright wall, and a hearth member forming the bottom of said combustion chamber and havly of said vaporizing wallin the space between said latter wall and said upright wall for supporting said deecting members in spaced relation above saidv vaporizing wall whereby to provide a completely unobstructed space between said vaporizing wall and said deilecting members.

2. In an oil burning apparatus or' the rotary wail flame type having a combustion chamber provided with an upright wall, a metallic hearth member forming the bottom of said combustion chamber and an annular vaporizing wall associated with said hearth member in spaced relation with respect to said upright wall, a plurality of plate-like deecting members above said vaporizing Wall and extending inwardly beyond said wall, and a plurality of spaced elements integral with and projecting upwardly from said hearth member in the space between said upright and vaporizing walls. each of said spaced elements supporting one of said deecting members behind said vaporizing wall independently thereof in spaced unobstructed relation with respect to the upper edge of said vaporizing wall.

3. In an oil burning apparatus of the rotary wall name type having a combustion chamber provided with 'an upright wall, a metallic hearth l member forming the bottom of said combustion chamber and 'an annular vaporizing` wall asso' elated with said hearth member in spaced rela tion with respect to said upright wall, a pluraliti ing an annular vaporizing wall associated there? 1 with in continuously -spaced relation with re-A spect to said upright wall, a plurality of deflecting members disposed above said vaporizing wall and extending inwardly beyond said vaporizing wall, and independent means situated outwardof plate-like detlecting members above said va- .porizing wall and extending inwardly beyond said i wall, and ay plurality of spaced elements integral 

